A　fuzzy　adaptive　sliding　mode　controller　for　an　air　spring　active　suspension　system　is　developed.　Due　to　nonlinearity,　preload-dependent　spring　force　and　parameter　uncertainty　in　the　air　spring,　it　is　difficult　to　control　the　suspension　system.　To　achieve　the　desired　performance,　a　fuzzy　adaptive　sliding　mode　controller　(FASMC)　is　designed　to　improve　the　passenger　comfort　and　the　manipulability　of　the　vehicle.　The　fuzzy　adaptive　system　handles　the　nonlinearity　and　uncertainty　of　the　air　suspension.　A　normal　linear　suspension　model　with　an　optimal　state　feedback　control　is　designed　as　the　reference　model.　The　simulation　results　show　that　this　control　scheme　more　effectively　and　robustly　isolates　vibrations　of　the　vehicle　body　than　the　conventional　sliding　mode　controller　(CSMC).